Second infusion will spur growth in Colorado, Arizona and Texas

Sandwich chain came close to an offering but opted to remain private

New name and design aim to push brand more solidly into fast casual

New unit halves kitchen space, offers efficiencies

Founder and owner Brian Petruzzi says nine-unit chain plans to open 40 locations in first half of 2016

Brown stepped aside as CEO in May

Fast-casual chain does brisk business up to and on the holiday

Persistently low stock price threatens company’s status

Arizona student groups say use of "illegal" is demeaning

Chain posts list of restaurants implicated